yashsingh1/xdaforums huggingface dataset:
[Android Q&A, Help & Troubleshooting] immorion:
P7 Tab Included AC power adapter

Greetings and salutations,

I was asked by a friend to eval his T7 Polaroid Tab (and a Pandigital Planet) and so far I'm liking the T7 but what I really want is a way to merge these two tablets into one but that's a different topic altogether....

[EDIT: I forgot to mention that he forgot to include the power cord and I have to improvise] I need information about the included AC power cord. Specifically, I need the DC output info and the tip polarity info. This info is usually printed on the power brick itself:

*Google+*Album*link

I'll likely be posting either a narrated slide show or a video of my tear down of this device soon (hopefully this weekend 1/7/12-1/8/12). As it happens, even though the battery is 'non-replaceable', steady hands, a small screwdriver and some time is all you'll need to pop this baby open. It is surprisingly simple to do, safely even....

Thanx in advance

Imm-o

Has anyone had a chance to peek at their ac power adapter for this tablet? I'm guessing its 5v 2.5a but would really like to be sure...
[Android Q&A, Help & Troubleshooting] immorion:
whoops post

---------- Post added at 12:41 PM ---------- Previous post was at 12:39 PM ----------

the ribbon connecting the screen to the ICB isn't attached via any sort of plug/socket but is soldered making it a bit tricky to replace the screen but not impossible. take plenty of pictures before attempting the repair and you should be able to 'git-r-done'.

I am tearing into my buddies today and will post a link to the album I publish. I'll also see about sourcing a replacement screen if its got any identification printed on it.

Cheers- Imm-o
[Android Q&A, Help & Troubleshooting] disveir:
Hello from ukraine

Sorry for bad english

we have ASISTANT AP-701 tablet thet full clone of this polaroid

img of polaroid instals correct but CM image has no wifi and have some problem whis G-sensor

We hope thet this mode will be complite

If you have a advice to fix wifi problem - plees give it to us

A lot of thanks

DeX
[Android Q&A, Help & Troubleshooting] chidave09:
@disvier the g-sensor should work fine in my modified build. As for Wi-Fi, I am still stuck and looking for ideas also
[Android Q&A, Help & Troubleshooting] xigil:
Simple solution try the paperclip hole on the back. It says reset on it.

I tried the superclick one after doing the 2.5 firmware update and got stuck at the android screen after it claimed to have rooted me. Pin hole got me back in still running the 2.5 firmware just not rooted. Su is missing from /system. I am a noob to android but has anyone tried the gingerbread hack yet?

I found a market apk that appears to be working instead of force closing though i dont have a droid phone so it wont let me complete registration properly. Though gaps is not loaded on this machine. Aptoide seems to be treating me right for most of what I am looking to run but needing root for some of the toys. C7 would be nice but without wifi on this ptab7200 seems a bit pointless. I ran a port and service scan during normal running no usb and nothing open. Still tinkering with it but i am very new but willing to throw in where possible. Trying not to be a script kiddie about this but still tooling through the learning curve. What good do the rockchip drivers do that i keep seeing posted up on here "these files are for you." Seems kinda off since i am not seeing much with a workable root access at this time. Any one care to side chat to help answer the question so i am not wasting others time in this forum.
[Android Q&A, Help & Troubleshooting] disveir:
in bild CM7_12.22.11 we have one position when screen is rotete not normal

up and down is revers

May be it because of thet i have asistant tablet (not polaroid)

About wifi

may be u can get wifi drivers from firware ?? May be some config fiules from it coud be help ?
[Android Q&A, Help & Troubleshooting] disveir:
@chidave09

May be wifi problem is becose of file named athwlan.bin.z77 in etc\firmware ?

May be wrong extension ??
[Android Q&A, Help & Troubleshooting] chidave09:
There are many files missing from cm7 that I was able to get from original firmware. I have pushed a few (explained in earlier post) that caused Wi-Fi to turn on instead of giving an error. Now just to figure out which files work and which ones break cm. A zip of the files I pulled from original firmware is posted in the folder linked in my signature

*Edit* just realized I didn't put those files up yet, lol! Uploading now
[Android Q&A, Help & Troubleshooting] ParrotSquawk:
I assume this is what I need to add calendar functionality to the tablet.

Do I need root to add this framewiwork?

TIA
[Android Q&A, Help & Troubleshooting] gscharnagl:
Dropbox I'm familiar with, but what's the "apps back up and restore" you're referring to?
[Android Q&A, Help & Troubleshooting] chidave09:
Yes you need root, but even then you can't write anything to the system partition
[Android Q&A, Help & Troubleshooting] sadsephiroth:
I also shattered the screen on mine. Thanks to Kohls return policy, I got my money back and ordered a Novo7 Elf. For the price difference, well worth it.
[Android Q&A, Help & Troubleshooting] HimWill:
cramfs tools

Noob question here, are these original files (ROM) encrypted? Will using the command "cramfs_uncompress" extract them. Has anyone tried this?

The tools are here: sourceforge.net/projects/cramfs/

Really behind the curve so bear with me, thanks.

The tools run in Linux by the way.
[Android Q&A, Help & Troubleshooting] drob311:
We believe they are encrypted... We cannot seem to get a read/write system... Its been a struggle
[Android Q&A, Help & Troubleshooting] KStarflier:
Right-o, I think it would be mighty fine to be able to develop a new kernel for this, but the problem is, I can't figure out what the screen is on the PMID700, nor the resolution. Otherwise, I THINK I could make a kernel with a proper wifi module that could work.

But of course, with the luck I've been having... And the fact that I can't post links isn't that helpful either. Ah well, at least I can try to point you in the right direction...

Kernel sources can be found by googling rk2918 open source. There should be an article on the first link that has a zip file that has the kernel sources.

Googling RTL8192CU, which I believe to be the wifi device, should point you to the project page. There's a link to the download section on the bottom of the page.

The instructions I use to compile the kernel can be located by googling compile cyanogen kernel. You probably won't have to download the rom source, doing the toolchain should be fine.

There is a slight modification that you need to do with the Makefile for the RTL8192CU driver, which is explained in the documentation. If you're feeling daring, good luck. I'll continue to keep an eye out on this thread. Good luck all and thank you for the hard work thus far.
[Android Q&A, Help & Troubleshooting] drob311:
I'll compile a kernel... Hopefully tonight. I gotta hunt down the info. I'll keep the thread updated.
[Android Q&A, Help & Troubleshooting] drob311:
I havent gotten to the kernel yet... I have been looking into side booting ubuntu from the flash nand or sdcard of the tablet... It looks to be possible... Hopefully tonight for the kernel, but life keeps stepping in front of android, damnit! :)
[Android Q&A, Help & Troubleshooting] DexterDawg:
Just wanted to say thanks to everyone working on this project!
[Android Q&A, Help & Troubleshooting] disveir:
It's wery sad thet the topic is ded

Nobody can't get wifi on CM fo this tab :(
[Android Q&A, Help & Troubleshooting] nitin12345:
system.img

I am able to extract system.img after doing the changes to the cramfs header file as mentioned in this forum slatedroid.com/topic/19808-rk29xx-imagetools-v21/page__st__60

Here are the steps

1) Download cramfs source from sourceforge.net/projects/cramfs/

2) If you build the source and run cramfsck you will get 'bad root offset(0)' error. So, you need to do some changes before building.

3) vim linux/cramfs_fs.h

Go to 'struct cramfs_inode {' and do the following change

//u32 namelen:CRAMFS_NAMELEN_WIDTH, offset:CRAMFS_OFFSET_WIDTH;

u32 pad:8, namelen:CRAMFS_NAMELEN_WIDTH;

u32 offset:CRAMFS_OFFSET_WIDTH;

After this run the following commands

touch cramfsck.c

make

./cramfsck -x system system.img

This extracts the system image. Not sure whether the tablet will recognize the image after we do our changes and recreate the image using mkcramfs.
[Android Q&A, Help & Troubleshooting] nitin12345:
hacking polaroid boot image

If you try to unpack the polaroid boot image with the script unpack-bootimg.pl, provided in one of the xda-developer's forum

you get following error.

./unpack-bootimg.pl boot.img

Could not find any embedded ramdisk images. Are you sure this is a full boot image?

So, I tried a different way to hack the boot image.

Download HxD HexEditor from WebSite

mh-nexus.de/en

Open the boot.img using the Hex Editor

Look for the gzip magic number 1F 8B in the Hex values.

Delete the data before 1F 8B

and save the image as boot.image.gz

now, extract this gzip file using gunzip

$gunzip boot.image.gz

This will create a file called boot.img

Now, move that file to boot.img.7z

$ mv boot.img boot.img.7z

$ 7z l boot.img.7z

This will list all the files and directories inside the boot image

Extract the files using command

$ 7z x boot.img.7z -oboot

This will create a boot directory in which files will be extracted

Now, if you edit init.rc you will see that the system image is mounted as cramfs

----inside init.rc---

on fs

insmod /rk29xxnand_ko.ko

# mount mtd partitions

# Mount /system rw first to give the filesystem a chance to save a checkpoint

mount cramfs mtd@system /system

#mount mtd@system /system ro remount

mount ext3 mtd@userdata /data nosuid nodev noatime nodiratime

mount ext3 mtd@cache /cache nosuid nodev noatime nodiratime

on post-fs

# once everything is setup, no need to modify /

mount rootfs rootfs / ro remount

----inside init.rc---

We can either try to mount cramfs as rw or change the system image to ext3 and then mount it as ext3.

Refer to my previous post on how to extract the polaroid system image.

For the boot image, we may have to rearchive the boot image using 7z and then gzip and then add the kernel headers back which we deleted.

Not sure if that will work as we may get into CRC issues.
[Android Q&A, Help & Troubleshooting] fireproof34:
I dont have htis Tab anymore as mine broke but i got a NEXTbook 7 and they have a rooted rom for it. Cframs and rk29xx here is how maybe you guys can figure it out for this one. i think the biggest part is this Wendal's rk29xx image tools. hope this helps

http://www.slatedroid.com/topic/21098-nextbook-premium-7/page__st__40

download tools here... My link

when you extract open and click an the.. 3. FirmwareKit_Easy folder read instructions in that folder..

in the folder... 2. firmware_install_tool there is a program that we can use to flash our roms with called RK29update this tool has all the spaces for our extracted rom like boot.img system.img recovery.img parameter and so on. i have just got this working for flashing rom but you will have to get in usb mode. the way i did it was plug in usb to tablet and keep hiting reset button to there was a blank screen had to install rockusb drivers. had a successful flash.

Hi i used Wendal's rk29xx image tools. had the same problem. i had to do it different to make it work. copy command from windows system32 folder past it in to Wendal's tools folder. copy oem update.zip in wendal's tool folder. make a new folder in wendal's tools called xxx open command prompt and type afptool.exe -unpack update.img xxx\

this will unpack rom in the xxx folder

to repack rom type afptool.exe -pack xxx\ update.img

i had to yous a differnt set of tools for unpacking system file

I followed your directions and managed to extract the rooted rom into Wendal's tool folder, but am lost as far as how to edit the system file. What I want to do is browse the directory and replace the wpa_supplicant file with another. How do you go about modifying the files or adding your own apps?
[Android Q&A, Help & Troubleshooting] chidave09:
GOOD NEWS!!!!!

(At least it's good if you think you totally bricked your tablet!)

First off, I thought I had bricked mine the other day. I, like some of you, had flashed a bad system.img (or an other image). After that nothing I flashed would go through. The tool would say "ok", but the tab would just go into "rockusb" mode. I decided to try everything I could think of, including trying to take apart the update tool. I stumbled upon a folder called "rockdev" and in that folder was "makeupdate.bat" and "RKimagemaker.exe". I noticed that it packed a few more files into the update that we weren't flashing ourselves. Well, I just so happened to have a newer version of the RK update tool that only allowed flashing of an update.img. So, I set everything up properly, made my own update.img from my own files and used the ones in the rockdev folder that I was missing. Flashed that and it actually worked! Not sure, but you should be able to download the update.img from the website and flash it with this newer RK tool.

Which is HERE

The "rockdev" tool to make your own update.img is HERE

Just add your .img files to the image folder

Both also added to the folder linked in my signature

*Update* If you downloaded the "rockdev' tool before 10:45pm CST on 1/26/2012, Please re-download. (I forgot a file!)
[Android Q&A, Help & Troubleshooting] fireproof34:
With that you should be able to add super user apk and the google frameworks stuff and have a SIMI rooted Tab. Which is were we are at with the Nextbook7p at the moment. Good luck guys.
[Android Q&A, Help & Troubleshooting] disveir:
It is a new good tool to upgrade or restore the firmware of RK TAB

But it can do nothing whis root or edit system.img

Or i don't understand something ??
[Android Q&A, Help & Troubleshooting] nitin12345:
I downloaded the Polaroid firmware 2.4, extracted it, extracted just the system image, repackaged the system image using mkcrams after adding the android market and then rebuilt the update image using the tools in rockdev folder. When I flash this modified update image, the table does not start. I had the tablet hang at the blue screen or loop around between the blue screen and the Polaroid image.

For some reason it does not recognize my modified system image. I want to change the image to ext3, but i don't know how to re-package the boot image. The mkboot command takes so many parameters. Has anybody been able to create a boot image for the Polaroid tab ?
[Android Q&A, Help & Troubleshooting] fireproof34:
Obviously I'm not the smart one that used the tool on the next book but the way I understand it it give you the ability to add things to the image that can't be installed with out root by unpacking the image add ing what you need ie app store and su super user. Then replacing the image and flash ing the new image thus semi root (still read only but apps can gain root access.)and Android market on stock rom.
[Android Q&A, Help & Troubleshooting] nitin12345:
One more thing. The tablet directly goes into the recovery mode showing version 1.3.7 or something and then restarts in 3 seconds. It does not print any message about extracting any of the images like boot, system etc. Does that mean there is something wrong with my update image ?
[Android Q&A, Help & Troubleshooting] :
I am able to push apps from the android store to my tablet by using version 1.82 of the android market apk and my PC. You must be actively logged in to the android store on the tablet and on a PC with the same account. First you must attempt to download the app with the tablet and get a "download unsuccessful" error message. Then you can push the same app via the android market from your PC and it will install successfully. This may also work with a cell phone in place of a PC but I haven't tried it yet.

There are two cyanogen 6 google apps packages for the Viewsonic G tablet that have android market version 1.82 These packages may also be a good source for more compatible versions of other google apps.

gapps-mdpi-tegra-20101020-signed.zip

gapps-mdpi-tiny-20101020-signed.zip
[Android Q&A, Help & Troubleshooting] disveir:
I totaly briked my tab today :(:(:(

when i try to modyfy CM system files from QtADB

It can flash but do not start after flashing

help me please :(:(:(
[Android Q&A, Help & Troubleshooting] chidave09:
My last post was in no way a step toward rooting. It is a fix for people who flashed something bad and their tablet will no longer boot. If you extract the files from here: http://db.tt/cNRzDmJQ and put the files in "rockdev\images" folder. Then run "makeupdate.bat". Your new update.img will be in the image folder. Flash that to your tab using the new update.img using the new flash tool. Now your tablet should no longer be bricked. I don't think it is possible to permanently brick these from flashing, which is great news
[Android Q&A, Help & Troubleshooting] chidave09:
I believe your problem is using mkcramfs to repackage the system.img. The boot image is looking for some modified type of cramfs that we don't know how to make. We would have to modify the boot image to allow different file systems.
[Android Q&A, Help & Troubleshooting] disveir:
Sorry

But ti is not work

I flash original imiges And CM imidges and all of them not boot :(:(:(

It does not On Nothing on screen :( :confused:
[Android Q&A, Help & Troubleshooting] chidave09:
You shouldn't be flashing more than update.img that you created from original images (ie system.img, boot.img, etc.) Maybe I can explain a little better

1st download & extract these files:

rockdev folder

Rk Batch Tool

Stock Images

Then follow these steps

1) copy extracted files from "Stock Images" to the "images folder" inside of the extracted "rockdev folder"

2) open the rockdev folder and run "makeimage.bat"

3) run the extracted "RK Batch Tool"

4) click the button next to "FW Path" browse to "path\to\rockdev\images" folder and select "update.img"

5) click the upgrade button

6) your tablet should boot as if it was just out of the box
[Android Q&A, Help & Troubleshooting] ezgene:
Magnetometer/Compass

I have a POLAROID PTAB 7200. As someone new to this forum and to tablets, does the Polaroid PTAB 7200 have a magnetometer to be used with COMPASS type apps and SKEYE or PLANETARIAX? If it does not have a magnetometer, does it mean that I will never be able to use a COMPASS type app?
[Android Q&A, Help & Troubleshooting] disveir:
I do exectly what u say

It flash all imiges and say it correct

RK29xxLoader(L)_DDR3_400Mhz_V1.64.bin

boot.img

kernel.img

misc.img

recovery.img

system.img

But it do not start :(:(:(

update img not flasing

May be i damege somthing when i try to owerwrite system files om CM imrges whis system files from 2.4
[Android Q&A, Help & Troubleshooting] chidave09:
Once again, if you have a place to put all those images, you are using the wrong tool. Use the tool you extract from "rk batch tool" to flash the update image ONLY!!! As that is the only spot the new tool has. Again make sure you are using RK Batch Tool 1.3 NOT 1.29
[Android Q&A, Help & Troubleshooting] fireproof34:
OK I Have great news for you guys. About 5 mins ago i got work that DOC hoppy and a guy from http://www.freaktab.com have rooted a cframs from and converted it to EXT3 for my nextbook7p. if you go over to http://www.freaktab.com a guy named Finless posted this

Rockchip Tablet Rooting!

OK after doing several Rockchip tablet roots I am pretty confident I can root ANY device using the RK28 or RK29 processors.

So do you have a tablet that someone has not rooted yet? Let me know and I will get to work on it!

Only one requirement. I must have the original ROM to root it. That is if you have an original ROM like an update.img from the manufacturer, thats should be all I need. If your manufacturer never released one then you can dump your ROM via ADB. Soon I will do a video on how to setup ADB and do a ROM dump.

Anyway so get your requests in and lets get some roots done!

Bob

I bet he can help you guys out too! Good luck!
[Android Q&A, Help & Troubleshooting] drob311:
Send me a pm...
[Android Q&A, Help & Troubleshooting] finlessbob:
I am looking into this ROM now. I have successfully unpacked it but first look the cramfs system.img looks corrupt? I can mount it but no files are in it?

Where did this ROM come from?

I am aware of another tablet that also has what is considered a BAD Cramfs partition. It's never been solved! Well at least not mounting it. So based on reading here this may take more work or possibly never to get rooted.

Do any of you guys have ADB drivers installed and can do a ADB dump of /system? It may require someone with a tablet to do that to get this thing cracked!

Come to freaktab and I can work with you all. If someone is willing to send me a tablet I will be able to do the ADB dump if you don't know how.

We may need just a simple copy of all the files in /system

See you on the Tab!

Bob

---------- Post added at 01:13 PM ---------- Previous post was at 01:07 PM ----------

OK post #209 explains how to mod cramfs.c to get the dump of system. Again please come to freaktab and I will work on this. Rather than make me do all that work over, if someone can provide me a system.img dump, I bet I can crack this tab!

Bob
[Android Q&A, Help & Troubleshooting] disveir:
I take this img file

http://www.southerntelecom.com/polaroidsupport/firmware/PMID700/update.zip

And RKBatchTool 1.3

Result is the same

Flashing correct but do not on :confused:
[Android Q&A, Help & Troubleshooting] x51:
If anyone can help Finlessbob with the dump.. the freaktab URL is http://www.freaktab.com/showthread.php?93-Cracking-this-ROM-for-the-P700&p=609#post609

Bob, are you in the US?
[Android Q&A, Help & Troubleshooting] finlessbob:
Yes I am in the US. California

Based on post #209 I can recompile mkcramfs.c but if someone already has done this and dumped system.img that would save me the time.

If no response in a while then I will just do it myself. Just hoping for a little help. I have boot.img all apart and ready for the root!

Bob
[Android Q&A, Help & Troubleshooting] joshzimbrick:
I translated word file from the latest rockdev folder. Here it is. Two firmware types?

Keep up the great work ! Maybe this can help...

Fuzhou rockchip electron limited

Image packaging tools

User instructions

2010-3-26

Overview

1. Using objects

2. Instructions for use

2.1. Command format

2.2. Parameter description

2.3. Use examples

Overview

The tool is used to keep all your project using the old Image firmware repackage firmware using the new format for the central tool . Currently supported RK28, andRK281X, andRKCROWN, andRKNANO, andRKCAYMAN and RK29

1. Using objects

Using the Swiss core micro-platform developers.

2. Instructions for use

2.1. Command format

RKImageMaker<- chip type ><Boot file path >< old Image firmware path >< new Image Save the firmware path >[ firmware system types]

2.2. Parameter description

Chip type : firmware support chips , you can specify the following values :-RK28|-RK281X|-RKCROWN|-RKNANO|

-RKCAYMAN|-RK29

Boot file path : through the BootMerger Tools Pack out of the Boot file

Old Image firmware path : through the RK28image.exe or AFPTool.exe -generated Img files

New Image firmware path : Specifies to save the new Image path to the firmware

Firmware system types : you can specify the following values : RKOS| ANDROIDOS, When this parameter is not specified the default RKOS

2.3. Use examples

RKCrown chip RKOS system firmware examples:

RKImageMaker –RKCROWN RKCrownBoot.bin RKCrown.img RKCrown_NFW.img

RK281X chip ANDROIDOS system firmware examples:

RKImageMaker –RK281X RK281XBoot.bin RK281X.img RK281X_NFW.img –os_type:androidos

RK29xx chip ANDROIDOS system firmware examples

RKImageMaker.exe -RK29 RK29xxLoader(L)_DDR2_333Mhz_V1.63.bin Image\update.img update.img -os_type:androidos